(A) "personal experience"
This is due to the fact that while Passage 2 is heavily influenced by the author's own experiences, Passage 1 tackles the topic of dog intelligence largely from an objective viewpoint. (B) is the wrong answer.
'Scientific' evidence is prominently emphasized in passage 1. Passage 2 does not. The answer is not (C). The author of Passage 2 offers less "historical" background material than the author of Passage 1.
The answer is not (D). Passage 2's author omits any "statistical evidence." The answer is not (E). Direct quotations are used by both writers to support their claims.
Here's another question with an answer similar to this about passage reading: https://brainly.com/question/3521530
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